Hi, I dug around for ages and could not find any hint of multicast support in syslog-ng so I decided to throw a patch together. Its a Works For Me(tm) job and took a little longer than I was expecting but hopefully others will find it useful. It applies to a 1.9.9 tree and should just work. I have not tested the IPv6 support but I cannot see a reason why it would not work, unless I have borked up my struct's :) Let me know what you think, I wrote this patch to make clustering logging servers dead easy and straight forward....I hope its useful to someone else too. The only improvement I can think of is adding a multicast 'drop membership' occurance, however I could not see a nice simple place to do this; it should be before the socket closes. Cheers Alex